A block is attached to a ceiling by a spring of force constant k. When pulled down and released, the block undergoes simple harmonic motion. The motion of the block is shown in the time plot. Which of the choices most closely describes the amplitude A and frequency f of the motion of the block? O A = 2 cm; f = 16 Hz O A = 4 cm; f = O A = 4 cm; f = = O A = 2 cm; f: = 8л y(t) = 4 cos( 16A (½) y(t) = 4 cos(16лt) y(t) = 2 cos( Hz 16″ Which of the equations of motion best describes the motion of the block? Oy(t) = 2 cos(81) os(½) Hz Hz If the mass of the block is 8.14 kg, what is the force constant k of the spring? N/m y (1) (cm) AAA 16″ 24* 2-4 -2 32n 1(s)
Simple harmonic motion
Simple harmonic motion is a type of periodic motion in which an object undergoes oscillatory motion. The restoring force exerted by the object exhibiting SHM is proportional to the displacement from the equilibrium position. The force is directed towards the mean position. We see many examples of SHM around us, common ones are the motion of a pendulum, spring and vibration of strings in musical instruments, and so on.
Simple Pendulum
A simple pendulum comprises a heavy mass (called bob) attached to one end of the weightless and flexible string.
Oscillation
In Physics, oscillation means a repetitive motion that happens in a variation with respect to time. There is usually a central value, where the object would be at rest. Additionally, there are two or more positions between which the repetitive motion takes place. In mathematics, oscillations can also be described as vibrations. The most common examples of oscillation that is seen in daily lives include the alternating current (AC) or the motion of a moving pendulum.
If the mass of the block is 8.14 kg, what is the force constant ? of the spring?
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